Year	Number
1996	35.5
1998	43.2835807800293
2000	52.7363166809082
2002	52.7363166809082
2003	45.2736320495605
2004	40.3846168518066
2005	41.3461532592773
2006	54.3269233703613
2007	55.769229888916
2008	57.6923065185547
2009	54.9763031005859
2010	54.028434753418
2011	53.051643371582
2012	53.051643371582
2013	53.9906120300293
2014	56.6502456665039
2015	52.709358215332
2016	52.2167472839355
2017	53.2019691467285
2018	49.029125213623
2019	51.2077293395996
2020	53.6231880187988
2021	51.6908226013184
2022	51.6908226013184